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//
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// ChatLayout
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// RoundedCornersContainerView.swift
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// https://github.com/ekazaev/ChatLayout
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//
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// Created by Eugene Kazaev in 2020-2023.
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// Distributed under the MIT license.
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//
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// Become a sponsor:
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// https://github.com/sponsors/ekazaev
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//
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import Foundation
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import UIKit
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/// A container view that keeps its `CustomView` masked with the corner radius provided.
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public final class RoundedCornersContainerView<CustomView: UIView>: UIView {
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/// Corner radius. If not provided then the half of the current view height will be used.
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public var cornerRadius: CGFloat?
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/// Contained view.
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public lazy var customView = CustomView(frame: bounds)
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/// Initializes and returns a newly allocated view object with the specified frame rectangle.
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/// - Parameter frame: The frame rectangle for the view, measured in points. The origin of the frame is relative
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/// to the superview in which you plan to add it.
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public override init(frame: CGRect) {
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super.init(frame: frame)
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setupSubviews()
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}
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/// Returns an object initialized from data in a given unarchiver.
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/// - Parameter coder: An unarchiver object.
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public required init?(coder: NSCoder) {
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super.init(coder: coder)
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setupSubviews()
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}
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private func setupSubviews() {
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addSubview(customView)
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translatesAutoresizingMaskIntoConstraints = false
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insetsLayoutMarginsFromSafeArea = false
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layoutMargins = .zero
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customView.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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customView.topAnchor.constraint(equalTo: layoutMarginsGuide.topAnchor),
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customView.bottomAnchor.constraint(equalTo: layoutMarginsGuide.bottomAnchor),
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customView.leadingAnchor.constraint(equalTo: layoutMarginsGuide.leadingAnchor),
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customView.trailingAnchor.constraint(equalTo: layoutMarginsGuide.trailingAnchor)
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])
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}
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/// Lays out subviews.
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public override func layoutSubviews() {
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super.layoutSubviews()
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layer.masksToBounds = false
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layer.cornerRadius = cornerRadius ?? frame.height / 2
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clipsToBounds = true
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}
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}
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